A Conversation for Paradox
Banach-Tarski
toybox Started conversation Dec 10, 2007
What about the Banach-Tarski paradox:
In the usual (mathematical) 3-D space, you can divide a ball of radius 1 into a finite number of parts and rearrange them in such a way that you can reconstruct two balls of radius 1.
(Funnily enough I think it doesn't work with discs in the plane.)
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Banach-Tarski
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